Method: EtchExternalSource#process_template

Defined in:
lib/etch.rb

#process_template(template) ⇒ Object

This method processes an ERB template (as specified via a <template> entry in a config.xml file) and returns the results.



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# File 'lib/etch.rb', line 2032

def process_template(template)
  @dlogger.debug "Processing template #{template} for file #{@file}"
  # The '-' arg allows folks to use <% -%> or <%- -%> to instruct ERB to
  # not insert a newline for that line, which helps avoid a bunch of blank
  # lines in the processed file where there was code in the template.
  erb = ERB.new(IO.read(template), nil, '-')
  # The binding arg ties the template's namespace to this point in the
  # code, thus ensuring that all of the variables above (@file, etc.)
  # are visible to the template code.
  begin
    erb.result(binding)
  rescue Exception => e
    # Help the user figure out where the exception occurred, otherwise they
    # just get told it happened here, which isn't very helpful.
    raise Etch.wrap_exception(e, "Exception while processing template #{template} for file #{@file}:\n" + e.message)
  ensure
    restore_globals
  end
end